Possible BGP hijack

Beginning at 2021-03-09 03:42:13 UTC, we detected a possible BGP hijack.

Prefix 177.53.28.0/22, is normally announced by AS270865 PW FIBRA OPTICA, BR.

But beginning at 2021-03-09 03:42:13, the same prefix (177.53.28.0/22) was also announced by ASN 45753.

This was detected by 20 BGPMon peers.

Expected
Start time: 2021-03-09 03:42:13 UTC
Expected prefix: 177.53.28.0/22
Expected ASN: 270865 (PW FIBRA OPTICA, BR)
Event Details
Detected advertisement: 177.53.28.0/22
Detected Origin ASN 45753 (NETSEC-HK NETSEC, HK)
Detected AS Path 46650 23520 3491 58453 45753
Detected by number of BGPMon peers: 20

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